minix/lib/nbsd_libcompat_minix/passwd.c

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/*
* grotesque hack to get these functions working.
*/
#include <sys/types.h>
#include <compat/pwd.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
/*
* group_from_gid()
* caches the name (if any) for the gid. If noname clear, we always
* return the stored name (if valid or invalid match).
* We use a simple hash table.
* Return
* Pointer to stored name (or a empty string)
*/
const char *
group_from_gid(gid_t gid, int noname)
{
static char buf[16];
struct group *g = getgrgid(gid);
if (g == NULL) {
if (noname) {
return NULL;
} else {
sprintf(buf, "%d", gid);
return buf;
}
}
return g->gr_name;
}
/*
* user_from_uid()
* caches the name (if any) for the uid. If noname clear, we always
* return the stored name (if valid or invalid match).
* We use a simple hash table.
* Return
* Pointer to stored name (or a empty string)
*/
const char *
user_from_uid(uid_t uid, int noname)
{
static char buf[16];
struct passwd *p = getpwuid(uid);
if (p == NULL) {
if (noname) {
return NULL;
} else {
sprintf(buf, "%d", uid);
return buf;
}
}
return p->pw_name;
}
/*
* uid_from_user()
* caches the uid for a given user name. We use a simple hash table.
* Return
* the uid (if any) for a user name, or a -1 if no match can be found
*/
int
uid_from_user(const char *name, uid_t *uid)
{
struct passwd *p = getpwnam(name);
if (p == NULL) {
return -1;
}
*uid = p->pw_uid;
return *uid;
}
/*
* gid_from_group()
* caches the gid for a given group name. We use a simple hash table.
* Return
* the gid (if any) for a group name, or a -1 if no match can be found
*/
int
gid_from_group(const char *name, gid_t *gid)
{
struct group *g = getgrnam(name);
if (g == NULL) {
return -1;
}
*gid = g->gr_gid;
return *gid;
}